3 years ago

Which expression represents an unknown number minus 45?

Mathematics

1 answer:

lara [203]3 years ago

8 0

I believe the answer is : B

You might be interested in

Please help!! Write in simplest radical form: √7/8 Show how you figured it out

12345 [234]

Given expression: $\sqrt{\frac{7}{8}}$ .

$\mathrm{Apply\:radical\:rule\:}\sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}$

$=\frac{\sqrt{7}}{\sqrt{8}}$

$\sqrt{8}=\sqrt{2^2\cdot \:2}=2\sqrt{2}$

$\frac{\sqrt{7}}{\sqrt{8}} =\frac{\sqrt{7}}{2\sqrt{2}}$

$\mathrm{Rationalize\:}\frac{\sqrt{7}}{2\sqrt{2}}$

$\mathrm{Multiply\:by\:the\:conjugate}\:\frac{\sqrt{2}}{\sqrt{2}}$

$=\frac{\sqrt{7}\sqrt{2}}{2\sqrt{2}\sqrt{2}}$

$=\frac{\sqrt{14}}{4}$

$=\frac{\sqrt{14}}{4}$ .

3 0

3 years ago

What is the solution to the equation below? square root 2-3x/square root 4x=2

Verdich [7]

Answer:

X=4 easy blah blah blah it’s 4. jdjjdjfnfvbdnnfn

5 0

2 years ago

I have to write my own word problem that can be translated into the equation x+4=10

koban [17]

Answer:

Gary had four cookies after Sally gave him her cookies he had ten. How many cookies did Sally give him?

7 0

3 years ago

Read 2 more answers

SOLVE PLEASE, FIND THE VALUE OF X! 7x/3+2=-15

nikklg [1K]

Answer:

${ \tt{ \frac{7x}{3} + 2 = - 15 }} \\ \\ { \tt{ \frac{7x + 6}{3} = - 15 }} \\ \\ { \tt{7x + 6 = - 15 \times 3}} \\ \\ { \tt{7x + 6 = - 45}} \\ \\ { \tt{7x = - 45 - 6}} \\ \\ { \tt{7x = - 51}} \\ \\ { \boxed{ \tt{x = - 7.3}}}$

8 0

2 years ago

Read 2 more answers

Identify the terms and like terms in the question 3n+7-n-3

Temka [501]

Answer:

like terms: (3n,-n),(7,-3)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers